Improvement in rotary pumps



v. 0. J. ORTMANS.

Rotary-Pumps.

No. 197,166. Patented Nov. 13, I877.

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FiIL.

N:PETER$. PHOTO-UTHOGRAPHER. WASHINGTON D C) 5 PATENT vIcToRc, J; chewon BRUSSELS, BELGIUM. 1

j M I P Q E ENT1N \ROTARY PUMPS.

fipecification'formingpart of Letters a e No. 197,166, dated November13, 1877 application riledo I Maya-2, 1877.

roan whom/it may'conccm: I 1 l Be it known that I, VICTOR CLEMENT JO-fxsnrn OBTMANS, of Brussels,'in the Kingdom, of Belgium, civil engineer,have "invented an, lmproved RotaryPump or Apparatus for Raisin gandForcingFluids, and for other purposes, I of which the following isaspecification My invention relates to a novel construction? anarrangementzof rotary pumps or 'apparatus for raising and forcing coldorhot'waterf f or other liquids, or for exhausting andforcing Q orcompressing air or gas, which apparatus is -also applicable asamotor ora meter; I I The said rotary pump or apparatusconsists of an outsidecircular. case or shellmountedi ,cn'asuitable frameior bed-plate. *Theinner part of the said case or shell 'forms a chamber of suitablesize,provided' with an inlet and anf outlet passage orpipe; The bodyorshell of j j the apparatus iswider at its periphery than' "at itscenter, havin g in transverse section the forin of 'a double cone, Fromthe central;

part of the said bodyprojects on each side a I ersed by-a"{-shaft,';upon which is affixedfthe; nave of central circular disk orplate, inadeii f afbutterfly-valve, mounted upon a pivot on"axistraversingthemiddle of the said depres-- sion or cavity radially tothe cente-rof the :said jplateg a l J I lhe depressionslor cavities inthe'plate or. disk "are formed so that the butterfly-valyesf L mountedupon theiraxes, as hereinbefore de-.

scribed, mayfbeturned one directiomlsoa to .lie in and fill the saiddepressions or ca'v-i-i j fties, and be completely embedded therein, Andthe ,said butterfly-valves are formedsq that when caused 'torotatepartially upontheir I-axes another direction they will extend on feach side of the said {plate or 'disk as far as 'thefinr r side 9f hiy-o h appa a us;

, upon the said plate or disk.

I In thesaid disk or plate are} f'formed four or a suitable number :of:depres, sion's or cavities, each of which 'is'fittedwith.

' and willform a series of movable radialpartitions dividing the innerchamber of the ap-V paratus into as many compartments. I

The advance or fore side of the saidbutterfly -va1ve is heavier and oflarger areathan its "rear or trailing side, so as to produce a tighter"joint as the pressure upon it increases, In or- -der to avoid anyinjiuious friction caused by the unequal surfaces of the two sides ofthe butterfly-valves, the said valves are provided with shoulders,which, when the valves arelopen to their full extent, rest againstabutment-s formed If, when the butterfly-valves are open, as described,the said disk or plate be caused to rotate, it is evident that the-'saidfbutterflyvalves would force before them the iiuid contained in theapparatus, and draw or suck in the fluid behind them. But, .as itiisessential thatxthe fluid actuated by the butterfly-valves should notpass entirely roundthe apparatus so as'to return to the inlet-passage Ipro- 'vide inside the apparatus, and between the inlet and outletpassages, an obturato'r formed of two solid partitions, projecting onefrom each side of the chamber to the. central disk or plate, and leavingbetween them only sufficient space for the central disk or plate to passwhen its butterfly-valves are closed and embedded in the depressions orcavities hereinbefore described. The ends of the said partitions arecurved, so as to act uponzand close or shutdown into the depressions vor cavities of thecentral plate or disk thebutterfly-valves astheir endscome in contact with the said curved parts and it is to be remarked thatfrom thepeculiar arrangement of the parts of theapparatus the saidbutterfly-valves have no strain uponthem at that part where the inletand the outlet of the fluid takes place. They are, therefore, free torotate partially upon their axes. :The opening of the saidbutterfly-valves is effected, and they are kept closed'vvhen required,

by means of a cam or projection, which, when the butterfly-valve passesthrough the obturator, takes into a groove formed to receive it. As soonas the butterfly-valve passes out from the obturator the said cam,comi.f g-in contact with the end of the said groo vrais actuated thereby toopen the butterfly-valveb'y causing it to perform about one-eighth of arevolution round its axis. To render the obturator perfectly fluid-tighton each side of the said plate or disk, I let into the side of the saidobturator a small plate of metal. A suitable passage, opening at one endbehind the said obturator and at its other end behind the said plates,causes the fluid in the apparatus to press the said plates against thecentral disk or plate, and thus to make a tight joint. The saidapparatus is provided with suitable lubricators.

It will be readily understood that, according to the nature of the fluidacted on, my apparatus may be used as a suction and force pump forliquids, as an apparatus for exhausting and forcing or compressing airor gas, and, by reversing the action of the fluid, as a motor and ameter for measuring the flow of fluids.

Having described the nature of my invention, I will proceed to describe,with reference to the accompanying drawings, the manner in which thesame is to be performed.

Figure 1 represents, in cross-secti on, a pump for elevating and forcingliquids constructed according to my invention. Fig. 2 is a longitudinalsection of the same. Figs. 3, 4, 5, 6, 7, and 8 represent parts of saidpump separately, as hereinafter described.

Similar letters of reference are used to indicate like parts where theyoccur in the different figures of the drawing.

G represents the body or case of the pump, which is supported by asuitable bed-plate. The said pump is provided with an inlet or suctiontube or passage, J, and an outlet-passage, K, and also withstuffing-boxes F F, traversed by the driving-shaft D, which shaftreceives rotatory motion from a drivin g-pulley, E, and is carried bysuitable bearings, one of which is represented at H, Fig. 1. Upon thedriving-shaft D, at D, is keyed or otherwise affixed a circularcast-iron plate or disk, A, extending to the circumference of the innerchamber of the pump G, and fitting into it, so as to be capable ofrotating in a groove formed to receive it in the periphery of the saidchamber. In the said plate or disk A are formed depressions or cavitiesA, the sectional shape of which is seen best in Fig. 3, which is asection of a portion of the said pump at that part where the butterflyvalves, hereinafter described, are open, and in Fig. 4, which is asection of a portion of the said pump, where the said butterfly-valvesare closed into the said depressions or cavities A. In the saiddepressions or cavities A are mounted butterfly-valves B B upon steelaxes or pivots 0, each of the said axes or pivots traversing a hole inthe said plate or disk A radially to the center thereof, and beingaffixed in position by a pin, C. The said butterfly-valves B B have insection the shape represented in Figs. 3 and. 4. Their advance or foreside B is heavier and of rather larger area than their rear or trailingside B, so as to increase the pressure of the fluid on that side, and torender the joint tighter as the pressure increases; and in order toavoid any injurious friction caused by the unequal surfaces of the twosides B B of the said butterfly-valves, each of the saidbutterfly-valves is formed with shoulders B B, which rest against theplate or disk A when the said valve is open to its full extent, asrepresented in Fig. 3.

I and I, Fig. 4, represent two projecting blocks forming the obturator.The ends of the said blocks are curved, so as to cause thebutterfly-valves to deviate and turn into their cavities or depressionsA in the plate or disk A when in the rotation of the said plate or diskA they come in contact with the curved ends of the obturator. The twoblocks I I, which are represented separately in section and elevation inFigs. 5 6 and 7 8, respectively, fill up the space between the sides ofthe pump and the plate or disk A, so as to prevent the fluid frompassing.

L are cams, one on each of the butterflyvalves B B, for the purpose ofkeeping the said valves closed in the disk or plate A when passingthrough the obturator and also to cause the said valves to open: whenthey issue therefrom, and to keep them open until they again come roundto the obturator.

M is a groove formed in the side of the pump and in the path of the camsL. The ends of the said groove M are inclined, so as to form inclinedplanes, down and up which the cams L slide on entering and leaving thesaid groove. The butterfly-valves B B, coming in contact with the curvedends of the obturator-blocks I I, are closed thereby, and at the sametime the cams L pass intothesaid groove just as the butterfly-valves B Bclose, and they keep the said valves closed until they pass out fi'omthe obturator. The cam L then slides up the inclined plane m, at the endof the groove M, and in so doing causes its butterfly-valve B B to openby performing about an eighth of a revolution round its axis 0.. The camL then continues to move with the disk or plate A, sliding over a planesurface until its butterflyvalve B B again comes in contact with thecurved end of the obturator when the action just described is repeated.The obturator has similar curves at each end, so as to enable the actionof the pump to be reversed.

N N are plates or strips of metal fitting into corresponding depressionsor slots, formed one in each block of the obturator. The said plates orstrips N N are pressed against the disk or plate D by the fluid in thepump,which fluid, passing through the passages N, presses upon the backof the said plates or strips N N. The respective positions of the platesor strips N N are indicated by dotted lines in Fig. 2.

O is a self-acting lubricator. P are bolts by which the two halves ofthe body of the pump are joined together. Q are bolts fixing the pump toits bed. R is a curved part of the shell or body of the pump, forpreventing any solid matters from getting in between the plate or disk Aand the body of the pump.

The action of the said pump is as follows: When the pump is at rest, asrepresented in Fig. 2, it will be seen that three of thebutterfly-valves B are open and form partitions in the body of the pump.The fourth butterflyvalve is closed and embedded in the disk or plate A,between the projecting blocks I I, which constitute the obturator. Noneof the fluid can, therefore, pass between the outlet K andinlet J inthat direction. As soon as rotatory motion is communicated to the diskor plate A, the butterfly-valve embedded therein a partition in the bodyof the pumps, and, driving before it the fluid in front of it, forms avacuum and draws in the fluid behind it. The said butterfly-valve,continuing to be carried round by the plate or disk A, finally forcesthe fluid before it through the outletpipe K. It then closes and passesthrough the obturator, as hereinbefore described. The action of all thebutterfly-valves is similar to that just described.

It will be observed that in the rotation of the central disk or plate A,the butterfly-valves open and close-they open on issuing from theobturator, and they close onentering the said obturator. The opening ofthe said valves is efl'ected by the cams L rising out of the groove M,and they are kept open by the said cams L sliding over a plain surfacemore elevated than the groove M, and by the difference of area andweight of the two sides B and B of the said butterfly-valves. Theshutting down of the said valves into the disk or plate A is eflected bytheir coming in contact with the on issuing from the obturator opens andforms curved ends of the obturator. The parts of the said pump subjectto friction, such as the groove M and its inclined surfaces, the cam L,and the central part and periphery of the plate or disk A, arecontinually lubricated, thus preventing the introduction of earthymatters between the parts, and the wear which would be produced thereby.

Having thus fully described my apparatus, what I claim as new therein,and desire to secure by Letters Patent, is-

1. The combination, with the shell, of the disk A, running at itsperiphery in a groove in said shell, and the butterfly-valves, adaptedto-close into cavities in the sides of such disk, substantially asdescribed and shown.

2. The combination, with the shell, of the disk A, running at itsperiphery in a groove in said shell, the butterfly-valves closing intocavities in the sides of such disk, and the obturator-block I I,pressing close against the sides of the disk, substantially as describedand shown.

3. The combination, with the disk A, having the depressions or cavitiesA, of thebutterfiy-valves, provided with the advance and trailing ends BB, and the shoulders B substantially as described and shown.

4. The combination, with the disk A, of the butterfly-valves B B, thecams L, and the groove M, substantially as described.

5. The combination, with the obturator blocks I I, of the plates N N,and the pipes N, for utilizing the pressure of the fluid in the pump,substantially as described and shown.

VICTOR OBTMAN S. Witnesses v R. S. KIRKPATRICK, W. H. KIRKPATRICK.

